Normal Blood Supply to the Human His Bundle and Proximal Bundle Branches

Normal blood supply to the human His bundle and proximal bundle branches.

The three major coronary arteries of 10 normal human hearts were injected with differentially colored gelatin mass for histologic determination of the blood supply to the His bundle and proximal bundle branches. The His bundle was dually supplied by the A-V node artery and the first septal branch of the left anterior descending artery in nine hearts, but entirely by the A-V node artery in one. ...

HIS BUNDLE AND BUNDLE BRANCHES/Massing, James References

1. Clark J, Plonsey R: A mathematical evaluation of the core conductor model. Biophys J 6: 95, 1966 2. Weidmann S: The diffusion of radiopotassium across the intercalated disks of mammalian cardiac muscle. J Physiol 187: 323, 1966 3. Sperelakis N, Hoshiko T, Berne RM: Nonsyncytial nature of cardiac muscle: membrane resistance of single cells. Am J Physiol 198: 531, 1960 4. Plonsey R: Bioelectri...

Anatomical configuration of the His bundle and bundle branches in the human heart.

The relationships among the His bundle, the origin of both bundle branches, and the interventricular (IV) septum were examined histologically in 32 human hearts, and the entire bundle branch systems were delineated in 13 of these. The His bundle in five hearts traversed the right IV septal crest, and the LBB origin was a very narrow stem (maximum 1.5 mm in cross-section) crossing from right to ...

His Bundle electrogram in bundle-branch block.

SUMMARY Because a great majority of patients with chronic complete heart block have bilateral bundle-branch lesions, it becomes important to recognize earlier degrees of bilateral bundle-branch block. The H-V interval in the His bundle electrogram during unilateral bundle-branch block reflects the conduction primarily through the contralateral bundle branch, and thus the His bundle electrogram ...

Longitudinal dissociation in the His bundle. Bundle branch block due to asynchronous conduction within the His bundle in man.